Anti friction journal box



(No Model.) A.- W. HALL.

ANTI FRIGTION JOURNAL BOX.

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A. VILFORD HALL, OF NEV YORK, N. Y.

SPECIFICATION forming part of Letters Patent No. 304,523, datedSeptember 2, 1884-.

l Application filed July 31,1884. (No model.) i

T0 all whom it may concern:

Be it known that I, ALEXANDER XV. HALL, a citizen of the United States,and a resident of the city and county ofv New York, in the State of NewYork, have invented a new and useful Improvement in Anti-FrictionJournal- Boxes,of which the followingis aspecitication, reference beinghad to the accompanying drawings.

The invention consists, essentially, in the combination, with a shaft oraxle and aj ournal-box having an interior concave surface, and iitted ateither end with a cap consisting of a disk, upon the interior whereof isformed a hollow cylinder, of a cylindrical sleeve mounted on said shaftor axle, to move therewith within said box, a series oflonger rollerssupporting said sleeve and shaft or axle by rolling between the exteriorsurface of said sleeve andthe interior surface of said' box, and .twoseries of shorter rollers, one series at each end of the said longerrollers, retaining the saine in place by rolling between the latterrollers and the outer surface of the cylinders of said caps.

The invention further consistsin certain details of constructionhereinafter described.

Figure l is a longitudinal sectional view of part of axle fitted with ananti-friction j ournalbox constructed according to my invention. Fig. 2is a transverse sectional view of the same on the line xx of Fig. l.

Similar letters of reference denote corresponding parts in both thefigures.

A dcnotesthe axle; B, the cylindrical sleeve mounted on said axle andrunning with it.-

O designates a series of cylindrical rollers surrounding the said sleeveB, and constructed with short journals C.

D indicates the box,which has within a concave cylindrical surface ofsuch diameter as to allow the rollers C O to revolve freely withinitbetween it and the said sleeve as they are carried round by rollingcontact with the exterior surface of said sleeve.

D and D denote the caps of said box, which consist each of a disk, onthe interior of which are formed two hollow cylinders, bc, arrangedconcentrically one within the other. One of these caps, D, has only acomparatively small hole in the middle of its head or disk toaecommodate the screw G. The other, D, has a larger hole, through whichthe axle A passes into the box.

The exterior of the outer cylinder, c, is provided with amalescrew-thread, to accommodate a'feniale screw-thread in the end of thebox, as illustrated by c c. The interior of this outer cylinder is aplain cylindrical concave surface of shorter diameter than the interiorsurface of the box, so that when the said cap is in its place there willbe a shoulder at o to restrain the rollersO from moving endwise. Theinterior ofthe inner cylinder of said cap is a plain concave cylindricalsurface. The'exteriorsnrface thereof is also cylindrical, but has a widegroove extending from the shoulder b to the shoulder b cut all aroundit. The bottom of this groove is a convex cylindrical surface. In thisgroove revolve a series of short rollers. (Designated by E.) These shortrollers retain the longer rollers C in place at proper distances apartby rolling between their journals C and the convex cylindrical surfaceat the bottom of said groove, as illustrated in section in Fig. 2. Theshoulders at b and b restrain the said rollers E from moving cndwise.

To prevent any end slip of the axle A, the pin F, having a hemisphercalhead, is inserted into the end of the axle, and opposite to it in thehead of the cap D is placed a screw, G. By means of two such screws G,applied one to the outer cap of each of the two journalboxes of an axle,and two such pins F, one in each end of the axle, the movement of theaxle lengthwise is restrained without any appreciable friction.

When the parts of this box are to be put together, it is to be done asfollows: First, the short rollersE are placed in the cap D. This cap isthen screwed into one end of the box, leaving the other end open. Therollers C are then inserted from the open end of the box, so that theshort rollers E will hold their journals the proper distance apart inthis cap. The sleeve B is then put in from the open end of the boxbetween the rollers C. The cap D is then screwed into the open end ofthe box, and, lastly, the short rollers E are inserted into IOO the capD through the opening at H, provided for that purpose, which may then beclosed with a sorewplug, or in any other way which may be foundconvenient. Vhen the parts are thus put together, the sleeve holds therollers in place, so that convenience and facility are afforded for theplacing of the box on the shaft or axle, or the placing of the shaft oraxle within the box. This sleeve may fit the axle snugly. It will notturn thereon, but turn therewith, because there will be greater frictionbetween the axle or shaft and the sleeve than between the sleeve and therollers.

My invention is -applicable to all places where anti-friction bearingsare used to support the journals of revolving machinery.

Vhat I claim as my invention, and desire to secure by Letters Patent,is-

l. In an anti-friction bearing, the combination, with the shaft or axleand a journal-box having an interior concave cylindrical surface andcaps fitted one into each end of said box, each consisting of a diskhaving formed on the interior thereof a hollow cylinder, and acylindrical sleeve mounted on the shaft or axle to move therewith withinsaid box, of a series of longer rollers supporting said sleeve and shaftor axle by rolling between the exterior surface of said sleeve and theinterior surface of said box, and two series of shorter rollers, oneseries at each end of the said longer rollers, retaining the saine inplace by rolling .them and t-he exterior surfaces of the cylinders ofsaid caps, substantially as and for the purpose herein described.

2. The combination, with the shaft or axle and the journal-box havingthe interior concave cylindrical surface and caps fitted one into eachend of said box, and each having formed on its interior two hollowconcentric cylinders, and a cylindrical sleeve mounted on said shaft oraxle to move therewith, of a series of longer rollers supporting saidsleeve and shaft or axle within said box. and kept in place lengthwiseby the end of the outer one of said cylinders, and two series of shorterrollers running in the groove in the exterior of said inner cylinder,andserving as bearings for the longer rollers, substantially as hereindescribed.

3. The combination, with the shaft or axle and the journal-box havingth'e interior cylindrical surface and caps fitted one into earch end ofsaid box, each having formed on its interior a hollow cylinder theexterior of which is grooved externally', and a cylindrical sleevemounted on said shaft or axle to move therewith, of a series of longer`journaled rollers supporting said sleeve or axle in said box, and twoseries of shorter rollers running in the groove in the exterior of saidinner cylinder, and serving as bearings for thejournals of the longerrollers, substantially as herein described.

fi. The combination of the box D, the shaft or axle, the sleeve B, thecaps having the internal hollow cylindrical projections, b c, the formerof which has a groove, b b", the journaled longer rollers C C, and theshorter rollers applied -within the grooves b b" and between t-hejournals of the longer rollers, all substantially as and for the purposedescribed.

A. VILFORD HALL.

Witnesses:

FREDK. HAYNES, Louis M. F. Traummann

